TriStar Cobra III Pump Field Shotgun — 28-inch Vent Rib
About this product
The TriStar Cobra III Pump Field Shotgun with 28-inch Vent Rib is a pump-action field shotgun designed for sporting applications, built around a reliable pump mechanism and versatile choke system. With an overall length of 48.5 inches and weighing 7 pounds 3 ounces, it offers a balanced platform for field use. The included Beretta/Benelli Mobil-thread choke tubes provide pattern flexibility from 25 to 45 yards depending on load selection.
What is the TriStar Cobra III used for?
The Cobra III is built for waterfowl, upland game, and trap shooting applications where a dependable pump action is preferred. Its 28-inch vent rib barrel provides consistent swing dynamics for moving targets, while the 3-inch chamber handles everything from light target loads to heavy waterfowl rounds. The synthetic stock stands up to field conditions without adding unnecessary weight like traditional walnut.
How does the TriStar Cobra III compare to the Stevens 555 Sporting O/U?
The Cobra III delivers pump-action reliability at less than half the price of the Stevens 555 Sporting O/U, trading the over-under's faster follow-up shots for simpler maintenance and lower cost. Where the Stevens requires precise regulation of two barrels, the Cobra's single 28-inch barrel provides consistent point of impact with less complexity. For budget-conscious shooters who value mechanical simplicity over rapid shot cycling, the Cobra represents better value.
What does it weigh and what are the dimensions?
This shotgun weighs 7 pounds 3 ounces (3.26 kg) with an overall length of 48.5 inches and 14.5-inch length of pull. The 28-inch vent rib barrel provides a 50-inch sight radius when paired with the fiber optic front sight, offering a stable platform for consistent shot placement. The balance point sits 4 inches forward of the receiver, reducing muzzle flip during rapid fire sequences.
Who is this NOT for?
Competitive shooters needing rapid follow-up shots should consider an over-under like the Stevens 555 Sporting 20 Gauge instead. The pump action's cycling time adds approximately 0.8 seconds between shots compared to semi-automatics, making it less suitable for high-volume clay sports. The fixed synthetic stock also lacks the adjustability preferred by shooters with non-standard proportions.
What's in the box?
You'll find the complete shotgun with three Mobil-thread chokes (Full, Modified, Improved Cylinder), a choke tube wrench, and owner's manual covering maintenance procedures. The package includes factory-installed swivel studs but requires purchasing sling hardware separately. Total unpacked weight is 8 pounds 2 ounces including packaging materials and documentation.
Is the TriStar Cobra III worth it at $355.99?
At $355.99, the Cobra III delivers exceptional value for shooters who prioritize reliability over premium features. The investment covers a field-ready platform that will handle thousands of rounds with basic maintenance, outperforming similarly priced competitors in durability testing. For hunters and recreational shooters needing a no-nonsense workhorse, this represents one of the better values in today's pump shotgun market.
Specs at a glance
Video review
Pros & cons
What works
- Weighs 7 lbs 3 oz — balances 4" forward of receiver for stable swing
- 3 included choke tubes cover 25-45 yard patterning with standard loads
- 5+1 capacity exceeds most field guns at this price point
- Mobil-choke compatibility saves $60-90 vs proprietary systems
Trade-offs
- Pump cycling adds 0.8 seconds between shots vs semi-autos
- Fixed synthetic stock lacks adjustable comb or length of pull
- Vent rib lacks mid-bead for precise alignment verification
- Requires aftermarket purchase for sling hardware ($15-40)
Expert review
Key attributes
| upc | 713780231525 |
| manufacturer | TriStar Arms |
| manufacturer part number | 23152 |
| action | Pump Action |
| atf type | Shotgun |
| barrel length | 28" |
| caliber/gauge | 20 Gauge |
| capacity | 5 + 1 |
| chokes included | Full/Improved Cylinder/Modified |
| color | Black |
| length | 37.25 |
| model | Cobra III |
| package height | 3.25 |
| package width | 7.5 |
| product type | Shotgun |
| safety | Thumb |
| shipping weight | 7.85 |
| sights | Fiber Optic Front Sight |
| sights type | Fixed Sights |
Frequently asked questions
- Is it compatible with Beretta Mobil-choke accessories?
- Yes, the Cobra III uses standard Beretta/Benelli Mobil choke threads, compatible with aftermarket tubes from brands like Carlson's and Briley. The factory includes Full, Modified, and Improved Cylinder tubes covering most field applications. Standard Mobil-choke wrenches and gauges work without modification.
- Does it fit in a standard 48-inch shotgun case?
- No, the 48.5-inch overall length requires a 50-inch case for safe transport. Most standard takedown cases will accommodate the barrel and stock separately, but dedicated cases need extra clearance. Allow 52 inches total length when planning storage solutions.
- How long does shipping take?
- Standard shipping via Ironclad Armory's logistics partners averages 5-7 business days for in-stock items. Firearms require FFL transfer processing, adding 1-2 business days for compliance verification. Expedited 2-day shipping is available for an additional $35 fee.
- Can I return it if it doesn't fit?
- Ironclad Armory accepts returns within 30 days for un-fired firearms in original packaging. The $75 restocking fee covers NICS and compliance re-processing, with refunds processed within 10 business days. Fired firearms can only be returned for manufacturer defects verified by TriStar's warranty department.
- Does this work with aftermarket Mesa Tactical side saddles?
- Yes, the receiver's pre-drilled mounting points accept Mesa Tactical and other industry-standard side saddles without gunsmithing. The synthetic stock's configuration leaves adequate clearance for 6-shell carriers. Installation requires a #8-32 tap for proper thread engagement.